title: Antineoplastic agents. 386. Isolation of sesterstatins 1-3 from the marine sponge Hyrtios erecta.
abstract: The Republic of Maldives' black marine sponge Hyrtios erecta has been found to contain three cancer cell-line inhibitory pentacyclic sesterterpenes designated sesterstatins 1-3 (2-4). One of the sesterterpenes, sesterstatin 2, specifically inhibited the Gram-positive opportunist Staphylococcus aureus. All three of the P-388 lymphocytic-leukemia-active (ED50 0.46 to 4.3 micrograms/mL) sesterstatins were obtained in trace quantities (3.0 x 10-7 to 5.4 x 10-7% yields) and represent structural variations on the more usual scalarin-type porifera sesterterpenes. The structures were elucidated by highfield (500 MHz) 2D NMR techniques augmented by HRMS results.
authors.affiliation: Cancer Research Institute, Arizona State University, Tempe 85287-2404, USA.
authors.forename: G R
authors.initials: GR
authors.lastname: Pettit
authors.forename: A
authors.initials: A
authors.lastname: Cichacz
authors.forename: R
authors.initials: R
authors.lastname: Tan
authors.forename: M S
authors.initials: MS
authors.lastname: Hoard
authors.forename: N
authors.initials: N
authors.lastname: Melody
authors.forename: R
authors.initials: R
authors.lastname: Pettit
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000302:isolation & purification* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D002240:Carbohydrate Sequence; D002855:Chromatography, Thin Layer; D005658:Fungi / Q000187:drug effects; D007941:Leukemia P388 / Q000188:drug therapy; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D008969:Molecular Sequence Data; D011161:Porifera / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013729:Terpenes / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents; D000970:Antineoplastic Agents; D013729:Terpenes; C110787:sesterstatin 1; C110788:sesterstatin 2; C110789:sesterstatin 3